- You can do it!, z.s.
- YACHT CLUB PŘÍBRAM, z.s.
- YACHT CLUB FRYMBURK
- you connected, z.s.
- Yacht klub J.J.J., z.s.
- YAKSHA GYM PLZEŇ z.s.
- Yacht life Seč, z.s.
- Yacht Club Vlhká plachta, z.s.
- Yacht club Slezská Harta z.s.
- YCR - Jachting Roudnice nad Labem, z.s.
- Yacht klub Strážnice, z.s.
- YMCA Orlová
- Youth for Youth, z.s.
- YACHT CLUB MILEŠOV z.s.
- YACHTGROUP.CZ
- Yacht Club Velké Dářko o.s.
- Yacht Club Yachta´s z.s.
- YMCA DAP
- Yangame Gym
- Yggdrasil Yoga z. s.
- Yacht Club Lanškroun, z.s.
- YC GRAF o.s. v likvidaci
- YACET-MLÁDEŽ, UMĚNÍ A KREATIVITA V EVROPĚ
- Y.C. Nové Sedlo
- Yacht club Letovice
- Yacht Club Kovářov z.s.
- YACHT CLUB DOKSY, spolek
- Youth For Future, z.s.
- Young Glass Symposium z.s.
- YACHT CLUB RAZOVÁ z. s.
- Yetti Club Trutnov z. s.
- YMCA Neveklov "v likvidaci"
- Yacht Club Tachov z.s.
- YIMBY Praha, z.s.
- Yves Hélory, z. s.
- Yacht Club Solenice, z. s.
- YAMAMOTO Czech z.s.
- Your Freestyle, o.s. v likvidaci
- YPO Czech Chapter z. s.
- Yacht klub Junior Praha
- Yukiyama dojo, z. s.
- Your Cooking Project, z.s.
- Yacht Club Kotva Praha, z.s.
- Yacht Racing Team z.s.
- YACHT CLUB SaS, z.s.
- Yacht club Znojmo, z.s.
- YMCA - Živá rodina
- Yacht Club Baník Most z. s.
- YMCA Hradec Králové
- YC Píšťany - vodní sporty